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Which statements about a probability distribution are always true?The probability of an outcome is never...

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Which statements about a probability distribution are always true?The probability of an outcome is never 0.The expected value of a probability distribution is the mean of the distribution.The sum of the probabilities in a probability distribution is equal to 1.Values for for a discrete random variable X in a probability distribution are always positive.A probability distribution must have more than one outcome.

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